TITLE: GCN CIRCULAR NUMBER: 24149 SUBJECT: Fermi GRB190422.96 Global MASTER-Net observations report DATE: 19/04/22 23:46:45 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D. Vlasenko Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov Kislovodsk Solar Station of the Pulkovo Observatory K. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk Irkutsk State University V. Yurkov, A. Gabovich, Yu. Sergienko Blagoveschensk Educational State University, Blagoveschensk R. Podesta, Carlos Lopez and F. Podesta Observatorio Astronomico Felix Aguilar (OAFA) Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres The Instituto de Astrofisica de Canarias D. Buckley, S. Potter, A. Kniazev, M. Kotze South African Astronomical Observatory MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB190422.96 ( 12h 34m 43.20s , -60d 55m 12.00s, R=4.87) errorbox 12 sec after trigger time at 2019-04-22 22:58:36 UT, with upper limit up to 17.6 mag. Observations started at twilight. The observations began at zenit distance = 50 deg. The sun altitude is -11.6 deg. The galactic latitude b = -60 deg., longitude l = 98 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1000695 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 32 | 2019-04-22 22:58:36 | MASTER-OAFA | ( 12h 7m 16.20s , -60d 7m 15.15s) | C | 40 | 16.7 | 115 | 2019-04-22 22:59:54 | MASTER-OAFA | ( 12h 7m 16.40s , -60d 7m 16.70s) | C | 50 | 16.8 | 217 | 2019-04-22 23:01:26 | MASTER-OAFA | ( 12h 7m 16.48s , -60d 7m 17.62s) | C | 70 | 17.0 | 337 | 2019-04-22 23:03:15 | MASTER-OAFA | ( 12h 7m 16.59s , -60d 7m 18.78s) | C | 90 | 17.2 | 481 | 2019-04-22 23:05:24 | MASTER-OAFA | ( 12h 7m 16.57s , -60d 7m 19.33s) | C | 120 | 17.4 | 655 | 2019-04-22 23:08:04 | MASTER-OAFA | ( 12h 7m 16.54s , -60d 7m 19.63s) | C | 150 | 17.5 | 859 | 2019-04-22 23:11:12 | MASTER-OAFA | ( 12h 7m 16.45s , -60d 7m 19.73s) | C | 180 | 17.6 | 1077 | 2019-04-22 23:14:50 | MASTER-OAFA | ( 12h 7m 16.30s , -60d 7m 19.71s) | C | 180 | 17.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.